Brake



July 19, 1927.

5 f 1 a E f 5 r L. E. LA BRIE BRAKE lFiled May 22. 1926 INVENTOR L113 DGER'ELABRIE WMM- ATTORNEY appiimimi` ma my as, im. semi no. 110,333. This inventionrelates to,` brakes, and Vis anadjusta-ble ecceiitricistop' engaging nd' illustrated as embodied in,l an internal eX- interlocking with onefend of -pivot 245i panding brake having novel shoes, prefer-` According to an'impoitant feature 'of the abl i of pressed sheet metal. invention,y one shoe preferably shoe 16, is

ln ob3ect of the invent-ion 1s to provide built up from -,a channe1-section stamping ,m a., strong shoe, suitable for large brakes, with 38, and twoside stampings-40 and 42. llia'cii f double-thickness stiiening webs spaced from of the side. stampingg 'has 153.1183 Secured each other and spaced inward] from rthe to one side flanve of stamping 38 tofform side edges of the shoe.'` In one es irable-lii'-` therewith asdou le-thickness stitlening :web rangement there is a channel-section mein# for the shoe.' The outer cylindricalsdiaxiges ber, the bottom of the channel vbeing cylinof stampingowand 42 cooperate with me' drical and forming part of the friction face, cylindricalr ttom portion of the 'channeland the sides or flanges of the channelfoim-y section stampin to form 'the friction geef ing parts of the stiifeningwebs, together orthe shoe, w ich'iss'ecured thelinjiiig''44`Y 16 with one or a pair of stampings-or the like, `At i the points embracing pivots '9,4.f 'gm1v 7n each having a` flange secured to one of vthe 26,A and the pivot or anchor 20,"the ilaiiges r side flanges of the channel. and42'aredrawnoutwgrd. {Th'e above and otherobjectsand features ly to form tubularbossesiembrlci 1 he` of the invention, includin a novel pivot p ivotd, and-eoopentingwigh opening* het i 20 mounting and other desirab e particular'considelianges of stamping 138e) form-spadli This structions, will be apparent fromi the folbearing surfacesjengagin *the-,pivotsz lowing descriptionfof one illustrative emleaves the. inner-faces oft e'twoshoe-stiea-- i bodiment shown in the accompanying drawin ywebs substantially lane.v in in which: hoes 14 and 18, w ich maybe of the igure 1 is a vertical section through the same construction and interchangeable, 'are 80 assembled brake, just inside the head of the preferably built Aup 'of two stam ings ardrum, showing the shoes in side elevation; ranged back .to back as shown in i re 2, Figure 2 is asection through one lend At the pivoted end of each shoe, e two shoe, on the line 2-2 of Figure 1 orming the central stiening webV Figure .3 is a section through the center areshown drawn out to form oppositely- 8l shoe on the line 3 3 of Figure 1; E'oJect-ing tubular bosses 48-f0rining spliced i Figure 4 `is a partial section on the line arings embracing the pivoty in 24 91.26 4-4 of Figure 1, showing the connection beand also serving as' spacers con between tween two of the shoes; and Figure 5 is a section o n the line 5 5 of ing webs of shoe 16 vand thus positioning ao Figure 1, showing the anchored ends of the the end shoes lateral y, v shoes While one illustrative embodiment has.

The brake selected forillustration includes been describedin detail, itiiii' not my inten'- a drumA 10 closed if desired at its o n side tion to limit the scope ofthe invention to 40 by a suitable backingnplate 12, an within that articularembodiment, or otherwise 95 which are arranged t ree shoes 14, 16, and 4than y the terms of the appended claims.

18. Shoe 16 is anchored on a pin 20 carried I claim: by the backing plate 12..and ps ssin through 1. A brake shoe com risin i'n combinaa relatively largel opening 225m t s stiffenfgltion, a central channel-s apedgpart havin a ing web of shoe 14. Shoes 14 and 18 are cylindrical ortion forming part of the fric-"10o connected at their ends toshoe 16 by pivots tion face o the shoe and two side flanges 24 and 26. forming stiffening webs and two parts, each Shoes 14 and 18 are spread apart to apply vhaving a flange secured to one of the side the brake, against the resistance of a return flanges of the channel-shaped art and a cyspring 28, by means such as a` double cam lindrical portion flush with t e cylindrical 105v 30, and shoe 18 (with some assistance lfrom portion of the channel-shaped part and shoe'14) acts against the resistance of an ormin part of said friction face.

auxiliary return spring 32 to force 'shoe 16 2i Arake shoe comprising, in combinaagainst the drum. Normally s ring 62 holds tion, a channel-shaped part having a cylinshoe 16 in an idle position etermined by drical portion forming part of the friction 110 face ofthe shoe and two side flanges forming stifening webs, and another part having a flange secured to one of the side flanges of the channel-shaped part and a cylindrical portion flush with the cylindrical portion of the channel-shaped part and forming part of said friction face. j

3. A brake shoe of pressed metal having a curved friction part and ytwo .stiftening webs integral with portions of the friction part and spaced apart from each other and spaced inwardly from the outer edges of the shoe. l

4. A brakeshoe'of pressed metal having a cylindrical portion, andtwo double-thickness stifenin webs each formed of two flan es, each ange being integral with part of t e cylindrical portion. A

5. A brake shoe having at least at its end 'two spaced stifl'ening` webs each consisting of two flanges secured together, one of each two flanges having van opening and the other being drawn out to form a tubular boss coaxial with respect to the opening, the opening and boss giving spaced bearing surfaces to be journalled on a pivot.

6. A brake shoe having at least at its end two s aced stifening webs each consisting of two anges secured together, one of each two anges having Aan opening and the other being drawn out to orm a tubular boss coaxial with respectto the o ening, the opening and boss giving space bearing surfaces to be Ajournalled on a pivot, the bosses being on the outer sides of the webs and projectj ing away from each other2 leaving the inner sides of the webs substantlally plane.

`7. A brake comprisingtwo shoes and a pivotV connecting them, one shoe having spaced webs each consistin of two flanges, each inner flange being su stantially plane and having an o e-nin embracing the pivot and each outer angel aving an outwardly- 4 9. A brake shoe of pressed metal having a' curved friction part and two double-thickness stiffening webs spaced apart from each other and each built up of two separate flanges permanently secured together.

In testimony whereof, I 4have hereunto signed my name.

' LUDGER ELIZ LA BRIE. 

